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UNIVERSE (PLANETS / SPACE/SATELLITES) MCQs

Earth And Space Science, Space And Satellite

Total Questions : 171 | Page 17 of 18 pages
Question 161. Saltwater makes up about what percent of the Earth's water?
  1.    1 %
  2.    3 %
  3.    97%
  4.    2 %
 Discuss Question
Answer: Option C. -> 97%
Question 162. What is small pieces of rock material?
  1.    grain
  2.    lava 
  3.    magma
  4.    sediment
 Discuss Question
Answer: Option D. -> sediment
Question 163. The inner core is made of iron that's almost as hot as the sun - why doesn't it melt?
  1.    Iron doesn't melt
  2.    That's not really very warm
  3.    Pressure is super high
  4.    Oceans cool it
 Discuss Question
Answer: Option C. -> Pressure is super high
Question 164. Lehmann discovered that the earth actually had two ________
  1.    mantles
  2.    layers of crust
  3.    cores
  4.    atmospheres
 Discuss Question
Answer: Option C. -> cores
Question 165. A subduction zone is formed
  1.    when one tectonic plate sinks below another
  2.    at every type of convergent plate boundary
  3.    at every type of divergent plate boundary
  4.    at transform boundaries
 Discuss Question
Answer: Option A. -> when one tectonic plate sinks below another
Question 166. Two ways to describe types of igneous rocks are _____
  1.    Extrusive and Intrusive
  2.    Foliated and Non-Foliated
  3.    Clastic and Biochemical
  4.    Black and Gray
 Discuss Question
Answer: Option A. -> Extrusive and Intrusive
Question 167. Which type of rock results from melting and cooling of magma?
  1.    Igneous
  2.    Metamorphic
  3.    Sedimentary
  4.    Extrusive
 Discuss Question
Answer: Option A. -> Igneous
Question 168. Which type of rock forms from extreme heat and pressure?
  1.    Igneous
  2.    Sedimentary
  3.    Organic
  4.    Metamorphic
 Discuss Question
Answer: Option D. -> Metamorphic
Question 169. The moon is now much cooler that the earth
  1.    Earth is bigger so cools slower
  2.    Moon gets no sunlight
  3.    Moon is actually warmer
  4.    Earth has water on it
 Discuss Question
Answer: Option A. -> Earth is bigger so cools slower
Question 170. Which of the following causes Earth's tectonic plates to move?
  1.    Energy from the Sun
  2.    Magnetic Pole Reversal
  3.    Convection currents in the mantle
  4.    Faults in Mountain Ranges
 Discuss Question
Answer: Option C. -> Convection currents in the mantle

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